//Write a program to accept a number and check it is a luck number or not.
//A number is said to be lucky if it does not contain any similar digit.
//ex- 9654 is a lucky number.
import java.util.*;
class lucky
{//class lucky opens
public static void main(String[]args)
{//main method opens
Scanner sc=new Scanner(System.in);
int r=0,count=0;//variable r to extract the digits,variable count to store the frequency
System.out.println("Enter a no");
int n=sc.nextInt();//variable n to accept the no//9654
for(int i=0;i<=9;i++)//0//1//2//3//4
{
int k=n;//49654
count=0;
while(k>0)//9654>0 t//965>0 t//96>0//9>0 //0>0 false
{
r=k%10;//9654%10=4//965%10=5//96%10=6//9%10=9
if(r==i)//4==4 t//5==4 f//6==4 f//9==4 f//4==4 t
{
count=count+1;//1//1+1=2
}
k=k/10;//9654/10=965//965/10=96//96/10=9//9/10=0
}
if(count>1)//2>1 true
{
break;
}
}
if(count>1)//2>1 true
{
System.out.println("It is not a lucky no");//49654
}
else
System.out.println("It is a lucky no");
}//main method closes
}//class closes
